I made the ID change indicated below (for the colocation constraints),
and everything configured fine using cibadmin. Now, I started JUST the
drbd master/slave resource, with the rsc_location rule setting the
expression uname to one of the two nodes in the cluster. Both drbd
processes come up and sync up the partition, but both are still in
slave/secondary mode (i.e. the rsc_location rule did not cause a
promotion). Am I missing something here? This is the rsc_location
constraint:
<rsc_location id="locate_drbd" rsc="rsc_drbd_7788">
<rule id="rule_drbd_on_dk" role="master" score="100">
<expression id="exp_drbd_on_dk" attribute="#uname"
operation="eq" value="arc-dknightlx"/>
</rule>
</rsc_location>
(By the way, the example from Idioms/MasterConstraints web page does not
have an ID specified in the expression tag, so I added one to mine.)
Doug
On Thu, 2007-04-19 at 13:04 -0400, Doug Knight wrote:
> ...
>
> > > > >>
> > > > >>>> For exemple
> > > > >>>> <rsc_location id="drbd1_loc_nodeA" rsc="drbd1">
> > > > >>>> <rule id="pref_drbd1_loc_nodeA" score="600">
> > > > >>>> <expression attribute="#uname" operation="eq"
> > > > >>>> value="nodeA"
> > > > >>>> id="pref_drbd1_loc_nodeA_attr"/>
> > > > >>>> </rule>
> > > > >>>> <rule id="pref_drbd1_loc_nodeB" score="800">
> > > > >>>> <expression attribute="#uname" operation="eq"
> > > > >>>> value="nodeB"
> > > > >>>> id="pref_drbd1_loc_nodeB_attr"/>
> > > > >>>> </rule>
> > > > >>>> </rsc_location>
> > > > >>>>
> > > > >>>> In this case, nodeB will be primary for resource drbd1. Is that
> > > > >>>> what
> > > > >>>>
> > > > >> you
> > > > >>
> > > > >>>> were looking for ?
> > > > >>>>
> > > > >>> Not like this, not when using the drbd OCF Resource Agent as a
> > > > >>> master-slave one. In that case, you need to bind the rsc_location to
> > > > >>>
> > > > >> the
> > > > >>
> > > > >>> role=Master as well.
> > > > >>>
> > > > >> I was missing this in the CIB idioms page. I just added it.
> > > > >>
> > > > >> http://linux-ha.org/CIB/Idioms
>
>
> I tried setting up colocation constraints similar to those shown in the
> example referenced in the URL above, and it complained about the
> identical ids:
>
> [EMAIL PROTECTED] xml]# more rule_fs_on_drbd_slave.xml
> <rsc_colocation id="fs_on_drbd" to="rsc_drbd_7788" to_role="slave"
> from="fs_mirror" score="-infinity"/>
>
> [EMAIL PROTECTED] xml]# more rule_fs_on_drbd_stopped.xml
> <rsc_colocation id="fs_on_drbd" to="rsc_drbd_7788" to_role="stopped"
> from="fs_mirror" score="-infinity"/>
>
> [EMAIL PROTECTED] xml]# cibadmin -o constraints -C -x
> rule_fs_on_drbd_stopped.xml
>
> [EMAIL PROTECTED] xml]# cibadmin -o constraints -C -x
> rule_fs_on_drbd_slave.xml
> Call cib_create failed (-21): The object already exists
> <failed>
> <failed_update id="fs_on_drbd" object_type="rsc_colocation"
> operation="add" reason="The object already exists">
> <rsc_colocation id="fs_on_drbd" to="rsc_drbd_7788" to_role="slave"
> from="fs_mirror" score="-infinity"/>
> </failed_update>
> </failed>
>
> I'm going to change the ids to be unique and try again, but wanted to
> point this out since it is very similar to the example on the web page.
>
> Doug
>
>
>
> > > > >> http://linux-ha.org/CIB/Idioms/MasterConstraints
> > > > >>
> > > > >>
> > > > >>
> > > > > _______________________________________________
> > > > > Linux-HA mailing list
> > > > > Linux-HA@lists.linux-ha.org
> > > > > http://lists.linux-ha.org/mailman/listinfo/linux-ha
> > > > > See also: http://linux-ha.org/ReportingProblems
> > > > >
> > > > >
> > > > _______________________________________________
> > > > Linux-HA mailing list
> > > > Linux-HA@lists.linux-ha.org
> > > > http://lists.linux-ha.org/mailman/listinfo/linux-ha
> > > > See also: http://linux-ha.org/ReportingProblems
> > > >
> > > _______________________________________________
> > > Linux-HA mailing list
> > > Linux-HA@lists.linux-ha.org
> > > http://lists.linux-ha.org/mailman/listinfo/linux-ha
> > > See also: http://linux-ha.org/ReportingProblems
> > _______________________________________________
> > Linux-HA mailing list
> > Linux-HA@lists.linux-ha.org
> > http://lists.linux-ha.org/mailman/listinfo/linux-ha
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> >
> _______________________________________________
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